PCIe: dw: rockchip: Init msi again when calling resume

If the controller is powered down and lost its settings of
MSI, host driver should take response of recovering all the
settings.

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Change-Id: I9f1fd9078e500388f8d9753cc5ab7882b404d142

drivers/pci/controller/dwc/pcie-dw-rockchip.c

@@ -1927,6 +1927,9 @@ std_rc_done:
 			goto err;
 	}
 
+	if (rk_pcie->pci->pp.msi_irq > 0)
+		dw_pcie_msi_init(&rk_pcie->pci->pp);
+
 	return 0;
 err:
 	rk_pcie_disable_power(rk_pcie);